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early init: fix error handling when opening /dev/console

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The comment says "this should never fail", but it definitely can fail
when you have odd initial boot filesystems, or kernel configurations.

So get the error handling right: filp_open() returns an error pointer.

Reported-by: Jesse Barnes <jsbarnes@google.com>
Reported-by: youling 257 <youling257@gmail.com>
Fixes: 8243186f0cc7 ("fs: remove ksys_dup()")
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Linus Torvalds 2019-12-17 13:10:11 -08:00
parent 58d90a04bd
commit 2d3145f8d2
1 changed files with 1 additions and 1 deletions
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2
init/main.c
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@ -1163,7 +1163,7 @@ void console_on_rootfs(void)
/* Open /dev/console in kernelspace, this should never fail */
file = filp_open("/dev/console", O_RDWR, 0);
if (!file)
if (IS_ERR(file))
goto err_out;
/* create stdin/stdout/stderr, this should never fail */